<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>Insert title here</title>
<style>
	.c1{
		/* 设置所有单词首字母大写 */
		text-transform: capitalize;
	}
	.c2{
		/* 设置所有单词大写 */
		text-transform: uppercase;
	}
	.c3{
		/* 设置所有单词的首字母小写 */
		text-transform: lowercase;
	}
</style>
</head>
<body>
<p>study hard and Make Progress Every Day!</p>
<p class="c1">study hard and Make Progress Every Day!</p>
<p class="c2">study hard and Make Progress Every Day!</p>
<p class="c3">study hard and Make Progress Every Day!</p>
</body>
</html>